Thread Repair - Size Kits - Keylocking

Thread Repair -> Size Kits -> Keylocking

There are 4 products in the sub-categories of Thread Repair - Size Kits - Keylocking. Browse the Thread Repair - Size Kits - Keylocking products table.

Category Details

A selection of Keylocking Size Kits Thread Repair. Keylocking inserts are used to repair threads by tapping the worn thread to a standard larger thread, twisting the insert into place and then driving in the keys to lock the insert. Also known as keenserts.

  • Each kit contains an installation tool and the quantity of inserts shown. One size per kit.
  • Also known as keenserts, keylocking inserts are available in mild steel and stainless steel.
  • Installation is by drilling out the old thread, countersinking, tapping new thread with a standard tap, screwing the insert until slightly below the surface, then tapping down the keys using the tool supplied and a hammer.

Small Parts & Bearings

Additional resources:


A more comprehensive listing may be found in the Thread Repair - Size Kits - Keylocking category on the MBA Minibearings main store.
Internal Thread External Thread Length Inserts Per Kit Indicative
Image
Size Kits Thread Repair - 1/4-20 UNC - 6.35mm - 7/16-14 UNC - 11.11mm - 9.4 mm Keylocking - Steel Insert
Internal Thread
1/4-20 UNC (6.35mm)
External Thread
7/16-14 UNC (11.11mm)
Length
9.4
mm
Inserts Per Kit
8
Size Kits Thread Repair - 1/4-20 UNC -6.35mm- 7/16-14 UNC -11.11mm- 9.4 mm - Steel
Material: Steel   
Part Number: KLI-0635-KIT (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Jun 27, 2026
$76.86 AUD
$92.24 AUD $76.86 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Internal Thread External Thread Length Inserts Per Kit Indicative
Image
Size Kits Thread Repair - 1/4-20 UNC - 6.35mm - 7/16-14 UNC - 11.11mm - 9.4 mm Keylocking - Steel Insert
Internal Thread
1/4-20 UNC (6.35mm)
External Thread
7/16-14 UNC (11.11mm)
Length
9.4
mm
Inserts Per Kit
8
Size Kits Thread Repair - 1/4-20 UNC -6.35mm- 7/16-14 UNC -11.11mm- 9.4 mm - Steel
Material: Steel   
Part Number: KLI-0635-KIT (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Jun 27, 2026
$76.86 AUD
$92.24 AUD $76.86 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Size Kits Thread Repair - 5/16-18 UNC - 7.94mm - 1/2-13 UNC - 12.7mm - 10.9 mm Keylocking - Steel Insert
Internal Thread
5/16-18 UNC (7.94mm)
External Thread
1/2-13 UNC (12.7mm)
Length
10.9
mm
Inserts Per Kit
7
Size Kits Thread Repair - 5/16-18 UNC -7.94mm- 1/2-13 UNC -12.7mm- 10.9 mm - Steel
Material: Steel   
Part Number: KLI-0794-KIT (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Jun 27, 2026
$76.86 AUD
$92.24 AUD $76.86 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Size Kits Thread Repair - 5/16-18 UNC - 7.94mm - 1/2-13 UNC - 12.7mm - 10.9 mm Keylocking - Steel Insert
Internal Thread
5/16-18 UNC (7.94mm)
External Thread
1/2-13 UNC (12.7mm)
Length
10.9
mm
Inserts Per Kit
7
Size Kits Thread Repair - 5/16-18 UNC -7.94mm- 1/2-13 UNC -12.7mm- 10.9 mm - Steel
Material: Steel   
Part Number: KLI-0794-KIT (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Jun 27, 2026
$76.86 AUD
$92.24 AUD $76.86 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Size Kits Thread Repair - 5/16-24 UNF - 7.94mm - 1/2-13 UNC - 12.7mm - 10.9 mm Keylocking - Steel Insert
Internal Thread
5/16-24 UNF (7.94mm)
External Thread
1/2-13 UNC (12.7mm)
Length
10.9
mm
Inserts Per Kit
7
Size Kits Thread Repair - 5/16-24 UNF -7.94mm- 1/2-13 UNC -12.7mm- 10.9 mm - Steel
Material: Steel   
Deleted Item. Available while stocks last.
Part Number: KLI-0794F-KIT (Each)
1 Available Now | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity
$39.56 AUD
$94.90 AUD $39.56 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

1 Available Now. These are priced to quit. Please contact us for a quote if you require more.
Size Kits Thread Repair - 5/16-24 UNF - 7.94mm - 1/2-13 UNC - 12.7mm - 10.9 mm Keylocking - Steel Insert
Internal Thread
5/16-24 UNF (7.94mm)
External Thread
1/2-13 UNC (12.7mm)
Length
10.9
mm
Inserts Per Kit
7
Size Kits Thread Repair - 5/16-24 UNF -7.94mm- 1/2-13 UNC -12.7mm- 10.9 mm - Steel
Material: Steel   
Deleted Item. Available while stocks last.
Part Number: KLI-0794F-KIT (Each)
1 Available Now | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity
$39.56 AUD
$94.90 AUD $39.56 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

1 Available Now. These are priced to quit. Please contact us for a quote if you require more.
Size Kits Thread Repair - 3/8-16 UNC - 9.53mm - 9/16-12 UNC 12.7 mm Keylocking - Steel Insert
Internal Thread
3/8-16 UNC (9.53mm)
External Thread
9/16-12 UNC
Length
12.7
mm
Inserts Per Kit
6
Size Kits Thread Repair - 3/8-16 UNC -9.53mm- 9/16-12 UNC 12.7 mm - Steel
Material: Steel   
Part Number: KLI-0953-KIT (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Jun 27, 2026
$82.59 AUD
$99.11 AUD $82.59 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Size Kits Thread Repair - 3/8-16 UNC - 9.53mm - 9/16-12 UNC 12.7 mm Keylocking - Steel Insert
Internal Thread
3/8-16 UNC (9.53mm)
External Thread
9/16-12 UNC
Length
12.7
mm
Inserts Per Kit
6
Size Kits Thread Repair - 3/8-16 UNC -9.53mm- 9/16-12 UNC 12.7 mm - Steel
Material: Steel   
Part Number: KLI-0953-KIT (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Jun 27, 2026
$82.59 AUD
$99.11 AUD $82.59 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.